Portable display assembly



FIG. 1 is a front side perspective view of the portable display assembly, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof; and,

FIG. 5 is a top plan view thereof. 

I claim the ornamental design for a portable display assembly, as shown and described. 